Closure



Oct. 5, 1943. M, R KEITH K 2,330,896

cLosURE Filed May 1:5, 1941 Sgg- Patented Oct. 5, 1943 UNITED STATESPATENT OFFICE;

. CLOSURE Martha Peabody Keith, Brookline,-Mass., assigner toKeith-Peabody, Inc., Brookline, poration of Massachusetts Mass., a cor-Application May 13, 1941, Serial No. 393,274

(Cl. 21S- 43) 13 Claims.

shown in the accompanying drawing, together with modications thereof, inwhich:

tively expensive, especially when metal for this purpose is scarcebecause of its need in other industries, and this is especially truewhere the closure is constructed of a double hood,v having separateportions extending over the top. Furthermore, such prior hoodconstruction is not entirely satisfactory or practical for deep caps,and it does not lend itself readily to all manners of decoration.

The object of this invention is to improve the construction of theclosure, so that it may be manufactured at a very great savingof'material and labor reducing substantially the amount of metalrequired in the closure, and making it possible to use paper or othersheet material for the construction thereof, which reduces the cost oftheclosure to a very small fraction of what it would be if made frommetal, and especially when formed of one or more shells as has beenproposed heretofore. Furthermore, decorations are possible that cannotbe furnished in any other form of closure, and in sizes to fit anypackage. The complete closure may be sprayed or otherwise decorated withvarnishes and colors. Deep caps are possible to an extent notpractically manuiactured heretofore. 'I'he weight of the closure isgreatly reduced as compared with the heavier metal construction ormolded products. Impregnated Paper and other material may be used thatwill permit storage in either damp or hot places with less liability toVdamage than are the metal and molded closures.

This object is accomplished by the attachment of a securing ring to apaper or other non-metallic body portion .which nevertheless is soassembled as to provide a rigid structure which will securely seal thecontainer and may be detachably secured thereto. A side wall and coverVdisc are secured to the ring in a manner which provides the necessaryrigidity and strength for the closure while yet permitting it to beconstructed preferably of paper or other non-metallic material, at lowcost and of light weight. v

A preferred embodiment of the invention is Fig. 1 is a cross sectionthrough the preferred form of closure; l

ilrlig. 2 is a detail cross section through the ring jo t; l

Fig. 3 is a similar view showing a modified form of ring joint;

Fig. 4 is a similar View showing another modied form of ring joint; and

Fig. 5 is a cross section thrpugh a portion of a modified form ofclosure.

The invention is .shown as applicable for the sealing of containers ofthe type indicated at C,

having a screw neck CI, thereon which is ex.

ternally screw-threaded and forms the inlet and outlet for thecontainer.

The closure is constructed of a top or'cover disc l; preferably formedof laminated paper or other suitable material, having the laminationsthereof adhesively secured togetherin the form of a rigid unitarystructure. The outer periphery of the cover disc I has a side wall 2arranged therearound, which side wall also is preferably formed of paperin the form of a coiled strip wound in several layers adhesively securedtogether. The top edge of the side wall 2 may be secured by adhesive tothe bottom of the top disc I, if desired for better strength, althoughit may be left unsealed if such added strength is not required, or ifitis otherwise secured thereto.

Secured on the inner sides of the top disc `I and side wall 2 is a guidering 3, shown as formed of thin sheet metal, which is somewhatresilient,

and Yhaving the 'body portion thereof screwthreaded or otherwise formedto interengage with.

or to be secured upon the neck CI of the container. This ring may beformed of paper, impregnated paper, or other material, where the addedstrength and pressure of a metal ring is not needed. The ring ofrelatively narrow width, rather than in the form of a shell that extendsentirely across the top of the container. is exceptionally economicalvdue to its saving in material and its capability of manufacture fromstrip material on an ordinary wire-forming machine.

At its upper edge, the ring 3 has a groove 4 formed therein, one side ofwhich groove is formed by a shoulder 5 provided by a re-entrant'.portion of the metal while the' other side thereof is formedby aninturned flange 6 at the upper edge of the ring. This groove I receivesthe peripheral edge of a liner l formed of any suitable lining material,and when inserted in place, is securely retained in the closure.

The top disc I has an annular groove 8 pressed into the bottom surfacethereof during its blanking operation 4to receive the flange 6 formed onthe ring so as to permit the liner 'I to it directly against the undersurface of the top disc I.

The top disc I is shown as provided with a label 3 on the top surfacethereof to provide a ,top decoration. This label 9 may be formed ofpaper or other materialof any desired color or shape, embossedifdesired. It may be printed or` otherwisedecorated or covredwith foil orother decoration, as may be desired. A side decoration strip I is alsoprovided, which may be decorated to any desired extent, and this stripIII extends substantially throughout the height of the side wall 2 andthe edge ofthe top disc I,

.usually possible with a sheet metal shell construction.

I claim: 1. A closure comprising a top disc, a side Wall of,non-metallic material extending about the periphery thereof and securedthereto, a guide ring secured inwardly of the side wall and inhaving a.flange-II overlappingxthe top ofthe disc I, so as to bind said top discand side Wall vsecurely together, thereby furnishing extra. support forthe entire structure. This side decorating strip luis preferablyadhesively secured to the adjacent parts of the closure.l `The loweredge of the ring 3 has an out-turned flange I2 formed thereon extendingbeneath and around the lower edges of the side wall '2 andv decoratingstrip I0, embracing the latter and securing the same rigidly to thering. 'This locks the parts together in a complete rigid structure.

'The ring 3 is formed preferably of thin resilient' material splittransversely to facilitate the assembly thereof, and shown in Figs. 1and 2, as having a butt end joint I3 therein, although these ends may beoverlapped asv shown at `I3a in Fig. 3, or hooked together as shown atI3b in Fig. 4, if desired, while yet allowing compression and expansionof the ring for insertion into the struc- 'ture and secure attachmentthereto.

The top disc I and side wall 2 are usually formed and assembledsubstantially in the' relation shown in Fig; 1 and secured togethereither by Aadhesive attachment or by means of the `side decorating stripI0 which-should likewise be applied thereto. The ring 3 may be insertedthen, being compressed with its ends overlapping, and after being movedinto the assembled wall and top structure, the expansive action -of thesheet metal Will cause it to move to its proper position. The linerA 1-may be inserted as it is stamped out, by applying apushing action toits edges which causes them` to slip over the threads in the ringandover the shoulder 5, expanding in the groove 4 to allow its center tosnap in directly against the bottom faceof the top disc I. This liner` Ithen holds .the split ring in expanded condition., against accidentalcompression. By crimping the flange I2. around the 1ower edges of theside wall 2 and decorating strip I0, these parts are tied securelytogether while the side decorating strip I0 also serves to hold the topdisc I in properly assembled relation and adds strength to the entirestructure.

Instead of constructing thering of sheet metal, it, may be formed ofpaper or other suitable material as desired, as shown in Fig. 5. but inthis event, the side decorating stripliia preferably ex. tends aroundthe lower edges of the side wall 2a and ring 3a, in the form of a flangeI2a, overlapping the inner edge of said ring and thereby securing theparts together without .the necessity for metal construction.

As the invention thus constructs the closure of paper or othernon-metallicmaterial throughout or the major portion thereof, atremendous saving is effected in the cost of manufacture,

while still producing a structure that will efternally threaded foradjustable connection with va container, said guide ring having aninturned flange at the upper edge portion thereof underlying the topdisc and projecting inwardly beyond the inner edge of the threadedportion thereof in position to overlap the upper end of the container,and a liner disc having the 4periphery thereof underlying said flangefor pressure engagement thereagainst by the pressure of the container.

2. A closure comprising a top disc, a side wall structure extendingabout the periphery thereof and secured thereto, said side wallstructure including a guide ring inwardly thereof and internallythreaded for adjustable connection with a container, said side wallstructure having an inturned flange at the upper portion thereofunderlying the top disc and projecting inwardly in overlapping relationwith the threaded portion of the guide ring in position to overlap theupper end of the container, and a liner disc having the peripherythereof underlying said flange for pressure engagement thereagainst bythe pressure of the container.

3. A closure comprising a top disc, a side wall extending about theperiphery thereof, a decorating strip extending about the peripheralportions ef the'side wall and top disc and rigidly securing the sametogether, an internal split ring within the side wall and bearingagainst the underside of the top disc, said ring having means forsecuring the closure on a container, and-means for holding the ring inexpanded condition.

4. A closure comprising a top disc, a side wall extending about theperiphery thereof, a decorating strip extending about the peripheralportions of the side wall and top disc and rigidly securing the sametogether, a transversely split internal guide ring bearing peripherallyagainst the side wall and having its upper edge bearing against theunderside of the top disc, means connected with said ring for attachingthe closure to a container, said ring having an internal groove in theupper edge portion thereof, and a liner disc. inserted in said grooveand holding the ring yin expanded condition. Y

5. A closure comprising a top disc and side wall extending about theperiphery of the top disc and both formed of laminated non-metallicmaterial, a peripheral decorating strip overlapping 6. A closurecomprising a top disc, a side wall separate from the top discandextending about the peripheral portion thereof,- means for securingthe side wall to the top disc, a transversely split internal guide ringwithin the side wall and bearing rigidly thereagainst, said guide ringhaving its upper edge bearing against the top disc and separatetherefrom, said ring having an internal groove in the upper edge portionthereof,

and a liner disc inserted in said groove and ho1d' ing the ring inexpanded condition.

'7. A closure comprising a top disc, a side wall extending about theperipheral portion thereof and secured thereto, a transversely splitinternal guide ring within the side wall and bearing thereagainstadapted to secure the closure on a container, said guide ring having aninternal groove in the upper edge portion thereof, and a liner discinserted in said groove and holding the ring in expanded condition.

8. A closure comprising a top disc, a side wall extending about theperipheral portion thereof and secured thereto, an internal guide ringwithin the side wall and adapted to secure the closure on a container,said guide ring having an.

internal groove in the upper edge portion thereof, and a liner discinserted in said groove over a substantial portion of the under surfaceof the top disc.

9. A closure comprising a top disc, a side wall extending about theperiphery thereof, a `decorating strip extending about the peripheralportions Aof non-metallic material extending about the peripherythereof, said side wall being formed of a plurality of superposed layersof non-rigid material rigidly secured together, a paper decorating stripextending about the peripheral portions onlyof the side wall and topdisc and securing the same together, and a substantially rigid guidemeans for securing the side wall and the top disc together, and asubstantially rigid guide ring secured inwardly of the side wall andseparate 15 therefrom, said guide ring having means for connecting theclosure with a container.

12. A closure comprising a top disc, a side wall of non-metallicmaterial extending about the pe ripheryvthereof,A a decorating strip ofnon-metallic material having a width approximately equal to the distancefrom the lower edge of the side wall to the top surface of the top discand extending about the peripheral edges thereof securing said wall anddisc together, and a non 25 metallic label discseparate from thedecorating strip and superposed on the top disc.

' 13. A closure comprising a top disc, a side wall extending about theperipheral portion thereof and secured thereto, an internal guide ringwith-v forming the upper side of said internal groove at the upper edgeof the ring with said flange pro..

:ecting inwardly of the ring beyond the inner edge of the securingportion thereof in position 40 to overlap the upper end of the containerto prevent displacement of the liner disc from the ring by the pressureof the container. l

MARTHA PEABODY KEITH.

